Ki-pún sèng-chit |
---|
Miâ, hû-hō |
protactinium, Pa |
---|
Gōa-hêng |
bright, silvery metallic luster |
---|
Protactinium tī chiu-kî-piáu lāi ê ūi-tì |
---|
|
Goân-chú-hoan |
91 |
---|
Goân-chú-liōng (±) |
231.03588(2)[1] |
---|
Goân-sò͘ lūi-pia̍t |
actinium-hē |
---|
Cho̍k, hun-khu |
n/a, f khu |
---|
Chiu-kî |
tē 7 chiu-kî |
---|
Tiān-chú pâi-lia̍t |
[Rn] 5f2 6d1 7s2 |
---|
per shell |
2, 8, 18, 32, 20, 9, 2 |
---|
Bu̍t-lí sèng-chit |
---|
Siòng |
solid |
---|
Iûⁿ-tiám |
1841 K (1568 °C, 2854 °F) |
---|
Hut-tiám |
4300 K (4027 °C, 7280 °F) (?) |
---|
Bi̍t-tō͘ (sek-un) |
15.37 g·cm−3 |
---|
Iûⁿ-hoà-jia̍t |
12.34 kJ·mol−1 |
---|
Cheng-hoat-jia̍t |
481 kJ·mol−1 |
---|
Goân-chú sèng-chit |
---|
Sng-hòa-sò͘ |
2, 3, 4, 5 (a weakly basic oxide) |
---|
Tiān-hū-tō͘ |
Pauling scale: 1.5 |
---|
Tiān-lī-lêng |
1st: 568 kJ·mol−1 |
---|
Goân-chú pòaⁿ-kèng |
empirical: 163 pm |
---|
Kiōng-kè pòaⁿ-kèng |
200 pm |
---|
Cha̍p-lio̍k |
---|
Chiⁿ-thé kò͘-chō |
tetragonal[2] |
---|
Jia̍t-phòng-tiòng |
~9.9 µm·m−1·K−1[3] (at r.t.) |
---|
Jia̍t-thoân-tō-lu̍t |
47 W·m−1·K−1 |
---|
Tiān-chó͘-lu̍t |
177 nΩ·m (at 0 °C) |
---|
Chû-sèng |
paramagnetic[4] |
---|
CAS teng-kì pian-hō |
7440-13-3 |
---|
Le̍k-sú |
---|
Chhui-chhek |
Dmitri Mendeleev (1869) |
---|
Hoat-hiān kap siōng chá ê tông-ūi-sò͘ |
William Crookes (1900) |
---|
hō-miâ |
Otto Hahn and Lise Meitner (1917–8) |
---|
Chòe ún-tēng ê tông-ūi-sò͘ |
---|
Chú bûn-chiong: protactinium ê tông-ūi-sò͘ |
iso
|
NA
|
half-life
|
DM
|
DE (MeV)
|
DP
|
---|
229Pa
|
syn
|
1.5 d
|
ε
|
0.311
|
229Th
| 230Pa
|
syn
|
17.4 d
|
ε
|
1.310
|
230Th
| 231Pa
|
100%
|
3.276×104 y
|
α
|
5.150
|
227Ac
| 232Pa
|
syn
|
1.31 d
|
β−
|
1.337
|
232U
| 233Pa
|
trace
|
26.967 d
|
β− |
0.5701
|
233U
| 234Pa
|
trace
|
6.75 h
|
β− |
2.195
|
234U
| 234mPa
|
trace
|
1.17 min
|
β− |
2.29
|
234U
|
|